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AS1301

Overload Protection

When the output voltage drops about 200mV below battery voltage due to very high load the AS1301 enters overload

protection condition. In this condition the output is connected to the input via a current limiting connection. Once the

overload is removed, the device enters soft start periode and ramps up to the nominal output voltage.

Undervoltage Lockout

The AS1301 is equipped with an undervoltage lockout functionality. If the battery voltage drops below 2.7V (typ) the

device enters the undervoltage lockout condition. The device remains in this condition until the battery voltage is high

enough to enter the soft start period. An internal hysteresis of 100mV will prevent ringing during startup. If the input

voltage climbs back to 2.8V (typ) after such a condition the device will turn-on automatically again.

Shutdown Mode

The AS1301 enters low-power shutdown mode when EN is logic low. In shutdown the charge-pump action is halted,

be forced higher then the input voltage, because the permanent monitoring of the input- and output voltage will prevent

an erroneous current form the output back to the input during shutdown.

Thermal Shutdown

The AS1301 offers thermal shutdown, which prevents eventual damage due to an over-temperature condition.

Thermal shutdown will be initiated if the junction temperature exceeds 145°C. If the temperature drops below this

value, the thermal shutdown will be released automatically and the device will resume operation.